• Maryland requires a vision screening
• Frequency: Students first entering the school system, entering 4th, 5th, or 6th grades, and entering 9th grade

Requires that each county board or county health department shall provide and fund vision screenings for all students in the public schools, select private schools, and any nonpublic educational facility approved as a special education facility by the Department. Unless evidence is presented that a student has been tested within the past year, the screenings shall be given in the year that a student enters a school system, enters the fourth, fifth, or sixth grade, and enters the ninth grade.

The results of the vision screenings shall be made a part of the permanent record file of each student, given to the parents of any student who fails the screenings, and reported to the county board or the county health department. The county board or the county health department shall report to the Department of Health and Mental Hygiene the results of the vision screenings and, to the extent practicable, the number of students receiving the recommended services. A student whose parent or guardian objects in writing to hearing and vision screening on the ground that it conflicts with the tenets and practice of a recognized church or religious denomination of which he is an adherent or member may not be required to take these screenings.

Maryland Code §7-404

http://www.marylandpublicschools.org/MSDE/nonpublicschools/nplegal/annotated_code/7-404.htm