How do you say 娘をどの英会話学校で勉強させればいいのだろうか。誠意のない運営に起因する数々のトラブルを考えれば考えるほど、悲観的になる。 in English?

I wonder which English conversation school my daughter should study at. The more I think about a number of troubles caused by their dishonest operations, the more pessimistic I become.