Securities And Exchange Commission
                             Washington, D.C. 20549

                                  Schedule 13G

                    Under the Securities Exchange Act of 1934

                                 Amendment No. 8

                         ITT Educational Services, Inc.
                         ------------------------------
                                (Name of Issuer)

                                  Common Stock
                                  ------------
                         (Title of Class of Securities)

                                    45068B109
                                    ---------
                                 (CUSIP Number)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

      |X|   Rule 13d-1 ( b)
      |_|   Rule 13d-1 ( c)
      |_|   Rule 13d-1 ( d)

The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page. The information in the remainder of
this cover page shall not be deemed to be "filed" for the purpose of Section 18
of the Securities and Exchange Act of 1934 ("Act") or otherwise subject to the
liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).


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Cusip No. 45068B109                    13G
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1.    Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Westport Asset Management, Inc. - 06-1087640
      Westport Advisers LLC - 06-1497709
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2.    Check the appropriate box if a member of a group*

      (a)   |_|
      (b)   |X|
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3.    SEC Use Only


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4.    Citizenship or Place or Organization

      Connecticut
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 Number of              5.    Sole Voting Power
   Shares
Beneficially                  720,000
  Owned By              --------------------------------------------------------
    Each                6.    Shared Voting Power
 Reporting
   Person                     1,638,490
    With                --------------------------------------------------------
                        7.    Sole Dispositive Power

                              720,000
                        --------------------------------------------------------
                        8.    Shared Dispositive Power

                              1,699,590
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9.    Aggregate Amount Beneficially Owned by each Reporting Person

      2,419,590
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10.   Check Box if the aggregate amount in row (9) excludes certain shares |_|

      134,700
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11.   Percent of Class Represented by Amount in Row 9

      5.85%
--------------------------------------------------------------------------------
12.   Type of Reporting Person*

      IA
--------------------------------------------------------------------------------


Item 1 (a)              Name of Issuer:

                        ITT Educational Services, Inc.

Item 1 (b):             Address of Issuer's Principal Executive Offices:

                        13000 North Meridan Street
                        Carmel, IN  46032-1404

Item 2 (a):             Name of Person Filing:

                        Westport Asset Management, Inc.

Item 2 (b):             Address of Principal Business Office:

                        253 Riverside Avenue
                        Westport, CT  06880

Item 2(c):              Citizenship:

                        Connecticut

Item 2(d):              Title of Class of Securities:

                        Common Stock

Item 2 (e):             CUSIP Number:

                        45068B109

Item 3.                 If this stated is filed pursuant to Rules
                        13d-1(b), or 13d-2(b), check whether the
                        person filing is a:

                        (a)  ( )   Broker or Dealer registered under Section
                                   15 of the Act

                        (b)  ( )   Bank as defined in Section 3(b)(6) of the
                                   Act

                        (c)  ( )   Insurance Company as defined in Section
                                   3(a) (19) of the Act

                        (d)  ( )   Investment Company registered under
                                   Section 8 of the Investment Company Act

                        (e)  (X)   Investment Adviser registered under Section
                                   203 of the Investment Advisors Act of 1940

                        (f)  ( )   Employee Benefit Plan, Pension Fund which
                                   is subject to the Provisions of the Employee
                                   Retirement Income Security Act of 1974 or
                                   Endowment Fund; see ss.240.13d-1(b)(1)(ii)(F)

                        (g)  (X)   Parent Holding Company, in accordance with
                                   ss.240.13d-1(b)(ii)(G) (Note: See Item 7)

                        (h)  ( )   Group in accordance with ss.240.13d-1(b)(1)
                                   (ii)(H)

Item 4.                 Ownership.

                        (a)   Amount Beneficially owned: 2,419,590 shares

                        (b)   Percent of Class: 5.85%

                        (c)   Number of shares as to which such person has:

                              (i)   sole power to vote or to direct the vote:
                                    720,000

                              (ii)  shared power to vote or to direct the vote:
                                    1,638,490

                              (iii) sole power to dispose or to direct the
                                    disposition of: 720,000

                              (iv)  shared power to dispose or to direct the
                                    disposition of: 1,699,590




Item 5.                 Ownership of Five Percent or Less of a Class

                        If this statement is being filed to report the fact that
as of the date hereof the reporting person has ceased to be the beneficial owner
of more than five percent of the class of securities, check the following |_|

Item 6.                 Ownership of More than Five Percent on Behalf of Another
                        Person:

Westport Asset Management, Inc. is deemed to be a beneficial owner for purposes
of Rule 13 (d) since it has shared power to make decisions whether to retain,
dispose of the securities of many unrelated clients. Westport Asset Management,
Inc. does not, however, have an economic interest in the securities of those
clients. The clients are actual owners of the securities and have the sole right
to receive and the power to direct the receipt of dividends from or proceeds
from the sale of such securities. The Reporting Person disclaims beneficial
ownership of such shares and disclaims the existence of any group.

Separate for Westport Asset Management, Inc. and Westport Advisers LLC,
Employees may be deemed to be beneficial owners of 134,700 shares held by
certain unregistered investment companies relying on Section 3(c)(1) or Section
3(c)(7) of the Investment Company Act of 1940 advised by such Employees.
Westport Asset Management, Inc. disclaims beneficial ownership of these shares
since it has neither voting power with respect to securities held by such
entities nor power to retain or dispose of securities held by such entities.

Westport Asset Management, Inc. owns 50% of Westport Advisers LLC, which is also
an investment adviser registered under Section 203 of the Investment Advisers
Act of 1940. With regard to the shares set forth under Item 4. (c ) (ii),
Westport Asset Management Inc. and Westport Advisers LLC are deemed to be
beneficial owners for purposes of Rule 13 (d) since they both have shared power
to make decisions whether to retain or dispose and vote the securities. Westport
Advisers LLC serves as investment manager of The Westport Funds, mutual funds
which hold such shares in the ordinary course of their business not with the
purpose nor with the effect of changing or influencing the control of the
issuer.

Item 7.                 Identification and Classification of the Subsidiary
                        Which acquired the Security Being Reported on By the
                        Parent Holding Company.

Westport Asset Management,Inc. makes this filing pursuant to Rule 13D-1 (b) (ii)
(G) since it owns 50% of Westport Advisers LLC. Westport Asset Management, Inc.
is an investment advisor and Westport Advisors LLC is an investment advisor for
a Series of Public Mutual Funds.

Item 8.                 Identification and Classification of Members of the
                        Group.

                        N/A

Item 9.                 Notice of Dissolution of Group.

                        N/A




Item 10.                Certification

                        By signing below, I certify that, to the best of my
knowledge and belief, the securities referred to above were acquired in the
ordinary course of business and were not acquired for the purpose of and do not
have the effect of changing or influencing the control of the issuer of such
securities and were not acquired in connection with or as a participant in any
transaction having such purpose or effect.

                        Disclaimer

                        The undersigned expressly declares that the filing of
this Schedule 13G shall not be construed as an admission that such person is,
for the purpose of Section 13(d) or 13(g) of the Securities Act of 1934, the
beneficial owner of any securities covered by this statement.

                        Signature. After reasonable inquiry and to the best of
                        my knowledge and belief, I certify that the information
                        set forth in this statement is true, complete and
                        correct.

Date     February 13, 2007

                                         Westport Asset Management, Inc.


                                         By /s/ Andrew J. Knuth
                                         -------------------------------
                                            Andrew J. Knuth, Chairman