(a) Reading/language arts and mathematics. (1) Through the 2004-2005 school year, a State must administer the assessments required under § 200.2 at least once during—

(i) Grades 3 through 5;

(ii) Grades 6 through 9; and

(iii) Grades 10 through 12.

(2) Except as provided in paragraph (a)(3) of this section, beginning no later than the 2005-2006 school year, a State must administer both the reading/language arts and mathematics assessments required under § 200.2—

(i) In each of grades 3 through 8; and

(ii) At least once in grades 10 through 12.

(3) The Secretary may extend, for one additional year, the timeline in paragraph (a)(2) of this section if a State demonstrates that—

(i) Full implementation is not possible due to exceptional or uncontrollable circumstances such as—

(A) A natural disaster; or

(B) A precipitous and unforeseen decline in the financial resources of the State; and

(ii) The State can complete implementation within the additional one-year period.

(b) Science. Beginning no later than the 2007-2008 school year, the science assessments required under § 200.2 must be administered at least once during—

(1) Grades 3 through 5;

(2) Grades 6 through 9; and

(3) Grades 10 through 12.

(c) Timing of results. Beginning with the 2002-2003 school year, a State must promptly provide the results of its assessments no later than before the beginning of the next school year to LEAs, schools, and teachers in a manner that is clear and easy to understand.