It really depends on what your expectation(s) is or what you think is more important to your kid.
The facilities, teachers, learning materials are some of the "hardwares" only. In the first stage in learning, the environment in the school is very important. The personality of the teachers, the attitudes of the principal, the behaviours of the other students are as important as the "hardware" we are looking into during the open day.
1. Try to talk to the teachers and the principal - see if they are serious in teaching the small kids.
2. Observe the other students in the school. If they are well behaved, this means that the school and their own families can trained them well. You kid will not learn the bad habits / attitudes after he / she starts to go to school.
3. Of course, you may want to let him / her learn very quickly / hardly. Please check your kid if he / she can manage the level. If he / she is smart, of course, the difficult materials may fit him / her. If not, please do not push him / her too much. That may only have a side effect on his / her learning experience.
Good luck and find the most suitable school for your baby!