YOU SAID:

i want to go to school because they have horses

INTO JAPANESE

馬がいるから学校に行きたい

BACK INTO ENGLISH

I want to go to school because I have horses.

INTO JAPANESE

馬がいるから学校に行きたい。

BACK INTO ENGLISH

I want to go to school because I have a horse.

INTO JAPANESE

私は馬を持っているので学校に行きたい。

BACK INTO ENGLISH

I want to go to school because I have a horse.