Related Clues:

• Field of study
• Note
• Gr. 1-6
• Play varsity ball
• Item on a high school jacket
• Correspondence
• I, O or U, but not A or E: Abbr.
• An initial, e.g.
• I, e.g.
• Type of sch.
• Digit
• Inscribe
• Sch. for youngsters
• One of five-and-a-half
• What 'The Star-Spangled Banner' writer is in this puzzle