They are both wonderful play based schools. Two of the best in the city. We love NCRC and have friends at St Columba's who love it too. I don't think you'd go wrong at either so I'd apply to both (as well as a handful of others). They both have great playgrounds; NCRC is in a lovely old (recently renovated) Cleveland Park home. NCRC is very nurturing. We get weekly email communications from the teachers about what the kids did in class -- which always wow me -- and weekly communications from the head of school. Such a great program and warm, friendly, diverse community. Love the talented teachers. Parent participation in the classroom is welcome -- whether reading to the kids or volunteering for a holiday celebration or taking pictures or just spending some time helping the kids. The teachers/staff all seem to know my child's name. Parents in our child's class are very low key and have become fast friends.