112学区的北岸学校很幸运，可以有别的选择，维持其传统的小规模课堂——在2009年小学班级平均人数为19人，中学为21人。

North Shore school District 112 was fortunate to have other options and will maintain its traditionally low class sizes - which in 2009 averaged 19 in elementary grades and 21 in middle school.

youdao

如果你在小地方学得好，专注于班级规模，例如班级的平均人数或者在20人以下班级的百分比，或者看师生比例。

If you learn best in small Settings, focus on measures of class size, such as average class size or percentage of classes with enrollment below 20, or on student-faculty ratio.

youdao

然而，通常由于人均成本问题，班级人数需要控制在平均15位员工左右。

However, usually due to the cost per head issue, average class sizes are about 15 staff.

youdao