i loved this series sooooo much. when i was younger it was practically my oxygen. i read it probably starting in fourth grade and until mid sixth grade maybe? i loved reading about ben, erica, zoe, murray, and all the shenanigans that went down. i think that stuart gibbs is such a good author and all of his books are *chefs kiss* absolute works of art. every single spy school book that i have read has not disappointed! every book has a unique plot with a different problem every time and usually a different location. i love seeing characters come up in all the books and resurface when you dont expect it. the spy school books are such a fun read even if you arent young anymore! 9/10