Possible Clues:

• Academic grants for gifted students
• A number of students with joints? The types you can get for free in support of being academically bright!
• Paid for opportunities for further study in 4 across similar to those produced in 6 down
• Man of Letters on Titanic from the start singlehandedly paid for opportunities for further learning
• For those learning their lessons, Grant's similar to one of those in 4 across going overseas
• Student awards
• Ultimate in cleaners, chars polish off awards