SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

QUATERNARY INVESTMENT

(Last)

(First)

(Middle)

5441 KIETZKE LANE

SECOND FLOOR

(Street)

RENO

89511

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
INTERNATIONAL SPEEDWAY CORP [ ISCA, ISCB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Group Member

3. Date of Earliest Transaction (Month/Day/Year)
04/10/2006

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	04/10/2006		C⁽¹⁾⁽²⁾		551,017	A	$0	674,356	I	By Remainder of France Family Group
Class A Common Stock	04/10/2006		S⁽¹⁾		551,017	D	$48.35	123,339	I	By Remainder of France Family Group
Class B Common Stock	04/10/2006		C⁽¹⁾⁽²⁾		551,017	D	$0	17,997,205.62	I	By Remainder of France Family Group
Class B Common Stock								42,998	D
Class B Common Stock								38,049.38	I	By Carl Investment Limited Partnership

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
07/01/2005 Options to Acquire ISCA	$57.01							07/01/2006	07/01/2015	Class A Common Stock	758		758	I	By Remainder of France Family Group

Explanation of Responses:

1. The transactions reported in this form relate to the non-duplicative disposition by sale for estate planning purposes of an aggregate of 551,017 shares of class A common stock of the registrant beneficially owned by France Family Group members Jamison C. France, Brian Z. France and Lesa France Kennedy. These chan ges will also be reported as changes in indirect ownership by all other members of the France Family Group. At the present time there are no other dispositions by sale planned by France Family Group members.

2. Effect of Redemption and gifts of Limited Partnership interests in Western Opportunity Limited Partnership among members of the France Family Group. Results in no change in the total number of shares owned by the France Family Group.

	By: Glenn R. Padgett as attorney in fact for	04/12/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.