State law requires a health screening prior to entry (which may or may not specifically include vision, hearing, dental, or BMI exams).
Pennsylvania Unconsolidated Statutes Article XIV Section 1402. Health Services.
(a) Each child of school age shall be given by methods established by the Advisory Health Board, (1) a vision test by aschool nurse, medical technician or teacher, (2) a hearing test by a school nurse or medical technician, (3) a measurement of height and weight by a school nurse or teacher, who shall use the measurement to compute a child's weight-for-height ratio, (4) tests for tuberculosis under medical supervision, and (5) such other tests as the Advisory Health Board may deem advisable to protect the health of the child. Vision tests shall be given at least annually and other tests at intervals established by the Advisory Health Board
Pennsylvania Unconsolidated Statutes Article XIV Section 1403. Dental Examinations and Dental Hygiene Services.
(a) All children of school age, in the Commonwealth, (i) upon original entry into the school, (ii) while in the third grade, and (iii) while in the seventh grade, shall be given a dental examination by a school dentist: Provided, however, That this requirement shall not apply to those school districts or joint school boards which have instituted a program of dental hygiene services as provided in subsection (b) of this section.
(b) Any school district or joint school board may institute a program of dental hygiene services for children of school age, which program shall be approved by the Secretary of Health, and for that purpose may employ dental hygienists
The Pennsylvania Code § 23.2. Medical examinations.
(a) Medical examinations as required by § 23.1 (relating to required health services) shall be provided on original entry into school, in grade six and in grade 11.
The Pennsylvania Code § 23.3. Dental examinations.
(a) Dental examinations shall be required on original entry into school and in grades three and seven. In instances where there are kindergartens in some schools of a district and not in others, the board or joint board may decide whether medical and dental examinations shall begin in the first grade or in the kindergarten.
The Pennsylvania Code § 23.4. Vision screening tests.
Vision screening tests shall be conducted annually by a nurse, teacher or medical technician. The Snellen Chart or other screening device approved by the Department of Health shall be utilized for vision screening.
The Pennsylvania Code § 23.5. Hearing screening tests.
(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.