No, no homeschooling--kids are almost 15 and 13, --they are way past the age to draw me pictures. I have sun catchers and wind chime thingies. I just hung two, so we'll see how it goes.
Those hawk silhouette things are supposed to work pretty well. Better if you put them on the outside of the window than if you put them on the inside, but supposedly they still work 'somewhat' even if they're on the inside.
The spiderweb decals are also supposed to work for songbirds but I dunno whether swallows would care as much, no clue.
Alternatively you can put netting or screen over the outside of the most problematic windows, to decrease reflections of sky and if it's set out a little ways from the window it also lets them bounce off instead of crashing.