If you get reports that school work is suffering, resume your supervision. Don't raise a quitter. When parents allow their kids to bail out of challenging situations, they deny them opportunities to learn from mistakes and overcome setbacks. A child will never develop the confidence to climb a mountain if she's allowed to back away every time she sees a hill. One misguided theory many parents buy into is the belief that some kids are born smart and will be successful without making much effort, while other kids are not born smart, and pushing them harder will create stress and burn-out.
Perseverance is key to academic success.
Another misguided theory is that lots of praise will boost self-esteem, in time producing high achievement. Excessive praise sends the wrong message. Genuine self-esteem doesn't come as a result of warm, fuzzy praises. It comes from facing challenges and mastering them through hard work and persistence. Praise should follow, not precede, effort and accomplishment.