I can recommend The Dance Shoppe as one of the highest quality dance studios for kids in the north valley. My daughter has attended the combo classes as little girl( age 3)l , tap classes as she got older and now hip hop (age 9 ). The classes are well organized with teachers that appear to really enjoy what they are doing. The kids learn dance terms, moves and expectations.
While not the fanciest place , don't let the looks fool you. They know how to make it all come together and your child will shine.
I have know a few families that have several kids attending other classes, at higher levels of technique and everyone raves about the professionalism and quality of the owners.
We have attending several end of the year dance recitals and they are really well produced , choreographed and very enjoyable. The kids walk away from the performance knowing they are a dancer.