YOU SAID:
School is horrible and stressing
INTO JAPANESE
学校はひどくてストレスがたまります
BACK INTO ENGLISH
School is terrible and stressful
INTO JAPANESE
学校はひどくストレスが多い
BACK INTO ENGLISH
School is terribly stressful
INTO JAPANESE
学校はひどくストレスが多い
BACK INTO ENGLISH
School is terribly stressful
That didn't even make that much sense in English.