YOU SAID:
School is full of meanies.
INTO JAPANESE
学校はぎっしり詰まっています。
BACK INTO ENGLISH
The school is fully packed.
INTO JAPANESE
学校はいっぱいです。
BACK INTO ENGLISH
The school is full.
INTO JAPANESE
学校はいっぱいです。
BACK INTO ENGLISH
The school is full.
That didn't even make that much sense in English.