Give me a better partner

I like this game a lot, except, my partner almost always bids “1”, even when his/her hand contains aces, kings, spade, etc. This seems to be a problem with a number of spades games. I have to constantly overbid to make up for the partner’s consistent underbidding. Why is this? Can it not be corrected? The opponents do not seem to do this. Would love a response on this. Thanks.

Sandibird49 about Spades.