No worries, though we can't use Google Streetview or aerial imagery for sources thanks to copyright reasons.  maxspeed:conditional=* is indeed the correct way to tag school zone speed limits, hazard=school_zone to indicate that it is a school zone (since it's possible to have a school zone without a conditional speed limit, and not all conditional speed limits are in school zones).
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            Published using OSMCha: https://osmcha.org/changesets/159268423
            