OP, re your comment that there are no good independent schools in the near vicinity to Dupont, others have mentioned Maret, Aidan, and the Cathedral schools (a bit further but not much) as some. If you don't consider those close enough to Dupont, I suspect you are going to have a tough time with this search, even with respect to bus options.

Norwood has a bus that leaves from Glover Park.

Is your current plan to live in Dupont indefinitely?

These bus suggestions are good ones, and a bus can be a great option for most mornings. But I can tell you from experience that if you want to have a degree of meaningful engagement with your DC's private school experience, once you have done it for a while it is going to get really tiring and tough for you to live relatively far away, and you are going to spend a lot of time in the car. There are going to be mornings where one of you wants/needs to be at school for a while before heading to work, and then you're talking about a lot of time in the car and leaving really early in the morning, unless DC is at someplace like Maret or Aidan (in which case you don't need a bus anyway).

This is not to say that I'm suggesting you move to the burbs, as compared to perhaps neighborhoods further NW in DC where there is a bit less drive time. You may still end up using a bus at that point, for example with Potomac which has bus routes throughout the District.

Dupont? What's your IB school? The ones I can think of by Dupont are generally considered good, or good enough for PreK3 - is it Francis Stevens?

Lowell has a bus. I am pretty sure that it is open to all grades (but not the pre-school).

For Alexandria schools, SSSAS provides bus service for their own school (obviously) and for burgundy and ACDS.

You'd take the bus to SSSAS then change on campus to the acds bus or burgundy bus to get to those other 2 schools.

Potomac might... I know they have bussing. What about Holy Trinity in Georgetown? Or doing the zones school, it may surprise you and be a good option for k - 3.

Aidan is close to Dupont. The Cathedral schools aren't much further. CHDS has busing, or at least it used to, so do Burgundy and Potomac.

We're about to do the DCPS PK3 lottery. Since some of the schools are charters, it has us thinking ahead about K too. Our in bound school is crappy. Private is financially do-able for us, but we both work downtown and have zero interest in adding significantly to our commute in the morning.

There are no good private options in the dupont and near vicinity.

Are there any privates in DC that we should be considering that offer busing? For as early as K? Just trying to get a lay of the land and what our options are in a couple years.