Possible Clues:

• Stat holders
• LPs and CDs: Abbr.
• Hi-fi spinners: Abbr
• Upvotes
• Teacher ___ (college application requirements that can be awkward to ask for)
• 45s and 78s (abbr.)
• LPs and CDs: Abbr
• CDs and LPs: Abbr
• Letters teachers send to colleges, informally
• Letters of support, for short