I think even religious institutions should have systems of checks and balances to prevent corruption and protect their members. As to what those would be and what they'd look like, I wouldn't be a good person to ask on that. I honestly wouldn't even know where to begin.

I have a few thoughts on that.

While I do think that external measures can make some good, I believe that most important are internal means for any goal. Want to prevent corruption? Have in your organization those who believe that corruption - that is, any kind of abuse of power - is unacceptable and that they can really do better, for better reasons than just not to get caught after a crime. The same goes for everything else: it's not like external corruption - power or money affecting one's mind, for one example - is the only factor in abuses of any sort; it also takes internal agreement to commit to it.

I think people should be taught to strive for ideals, either to help themselves or others do better and whether by parents, schools or other educational institutions. I don't have much qualms but one against Church/Mosque/Sinagogue/any else teaching it - that it teaches to follow good guidelines for an entity that doesn't exist (an intangible concept that rests solely on faith without any sort of reasonable proof), rather than for a person's own well-being and others' improvement by that person (tangible beings that can clearly be experienced in many ways and whose life quality could be vaguely assessed and improved by applying the right actions). As soon as they change the point of following the rules they're often so eager to enforce, I'll be glad to accept religion in general and religions specifically as just another point of view on life.