Respuesta :

Fifth grade has 24 students per each teacher.
Sixth grade has about 23 students per teacher.

Sixth grade is lower.
harpazo
Ratio:

Students: teachers

7th Grade

156 : 7

156 ÷ 7 = 22.2857142857

5th Grade

120 : 5

120 ÷ 5 = 24

Note: 24 is bigger than 22.2857142857.

We can clearly see that 7th grade has the lowest student to teacher ratio.