jiā / zhǎng / dān / xīn / cháng / tài / fēn / bān / huì / yǐng / xiǎng / hái / zi / de / xué / xí / jìn / dù

家长担心常态分班会影响孩子的学习进度。

The parents worry that mixed-ability class grouping may affect their child's learning progress.