It’s that time of year. As children head off to school every fall, they’ll undergo a series of health screenings. Massachusetts requires public schools to conduct the following screenings: body mass index (or BMI), vision, hearing and scoliosis.

Parents may have many questions:

• When are children screened?
• What’s normal? What’s not?
• How should parents handle results?

Dr. Alexandra Epee-Bounya, from Boston Children’s Primary Care at Martha Eliot, reviews the ins and outs of various school screenings. …