This is the IHSAA by-laws
?18-1
To be eligible scholastically, students must have received passing grades and earned credit at the end of their last grading period in school in at least seventy percent (70%) of the maximum number of full credit subjects (or the equivalent) that a student can take and must be currently enrolled in at least seventy percent (70%) of the maximum number of full credit subjects (or the equivalent) that a student can take.
Semester grades take precedence.
Two semesters of the state required physical education course may be counted as a full credit subject for eligibility purposes even though a full credit is not granted by the Department of Education. When the block four scheduling program is used, students must be currently enrolled in and passing three courses. Class periods must meet Indiana Department of Education standards for awarding credit and minutes in class.
NOTE: A full credit subject requires a minimum total of 250 minutes of instruction per week for one
semester.
Maximum Classes 4 5 6 7 8
Must Pass.............. 3 4 5 5 6
18-1.6
Students who are ineligible scholastically at the end of a grading period or semester, are ineligible for the following grading period.
From the question an answer section of the by-laws:
Q. 18-4 If a student is academically ineligible at the end of a grading period or semester, is the student academically ineligible for the entire next grading period?
A. Yes, an academically ineligible student at the end of any grading period is academically
ineligible for the entire next grading period. (Rule 18-1.6)
Q. 18-5 If a student is academically ineligible at the end of a grading period or a semester, when can
the player become academically eligible?
A. If, following a period of academic ineligibility a student successfully meets all academic
requirements during a succeeding grading period, the student will be eligible to play on the
date the principal certifies grades for the succeeding grading period. Here the student would
be eligible on the certification date for the succeeding grading period. (Rule 18-2)
Q. 18-6 Is a student who had been academically ineligible during a grading period, but who meets the
scholarship requirements the next grading period, eligible to play the night of the last day of
the next grading period?
A. It depends on the certification date of the student?s school. A student becomes academically
ineligible on the certification date and also academically eligible on the certification date.
Here, if the certification date is the last date of the grading period, then the student would be
academically eligible to play sports that day. If the certification date was the following
Tuesday, then the player would be eligible the following Tuesday. (Rule 18-2)
18-2
Each school will establish consistent grading periods within the school year. The principal shall certify these specific dates to the Association on the membership form and certification dates for eligibility if different from ending dates. Certification of eligibility must be completed no later than noon of the tenth school day following the end of a grading period as specified on the membership form.?
So the date the school has established to certify the grades to the IHSAA after the next grading period is the date an ineligible student could become eligible again.