28 Pa. Code § 23.5 – Hearing screening tests.

(a) Identity. A hearing screening test determines the response to discrete frequencies presented at a specified decibel level.
(b) Test equipment. An individual pure tone audiometer or other screening equipment approved by the Department of Health shall be utilized for hearing screening tests.
(c) Frequencies employed. Frequencies of 250, 500, 1,000, 2,000 and 4,000 cycles per second shall be employed in screening testing.
(d) Pupils to be tested. Each year, pupils in kindergarten, special ungraded classes and grades one, two, three, seven and 11 shall be given a hearing screening test.

This section cited in 28 Pa. Code § 23.6 (relating to threshold hearing tests); and 28 Pa. Code § 23.21 (relating to general).