Wow, that's interesting. In Dutch you would definitely use an article in that sentence: ze heeft op/aan het conservatorium gestudeerd - she studied at (the) co

Wow, that's interesting. In Dutch you would definitely use an article in that sentence: ze heeft op/aan het conservatorium gestudeerd - she studied at (the) conservatory hij heeft op/aan het hbo/de universiteit gestudeerd - he studied at (the) college/university