I find it difficult to find a planner that works in a resource room type setting and this style planner is the one I use for lesson planning. It is a good way to organize groupings that may not occur every day, unlike the style of typical planning pages. Instead, it goes by time frame for the school day (and a bit before and after for meetings, etc.)
It is fully editable in case you need to change times to be something more specific for your classroom setting. I hope it works as well for you as it does for me!