preschool tour

hi FTM here. how did yall select the preschool to enrol your child in? and also, realised that govt sch don't do sch tour during weekdays where all the kids & teachers are there. however for pte school, they do allow sch tour on weekdays during the day times for us to observe and visit the sch. how did u chose govt sch to be of your choice since cant visit the sch prior to registration? TIA!