Related Clues:

• Teaching, often one-to-one
• Instruction
• Flows back — declines
• Coaching
• Recedes to the ocean
• Draws back, as water from a beach
• Moves like the tide, sometimes
• Flows' partners
• Eases up
• Teaching aid perhaps for Bill at school
• Refluxes of tides
• Drifts away
• English books section declines
• Winds down
• Tends toward low tide