We used Covenant for one year with my oldest daughter and didn't like it at all. I like what they had to say on a lot of different topics, but when it came to the material it wasn't that great. I loved reading their statements of faith and learned a lot from the site.
For one thing, they covered a lot of subjects. I believe it was like eight subjects per day for grade one. That was a little much. They also used Bob Jones and some other curriculums, they pull from a bunch of different sources. It wasn't their own curriculum and it didn't seem to back up theologically what they were stating as their belief statement. I thought there was way too much busy work, all of it was work book based. I don't like the work book approach. There is a place for workbooks, but not in every subject. I found it was very hard to teach, the lesson plans were not well laid out and I didn't have the confidence at the point to do them on my own. I was spending around 6-8 hours a day for first grade, who has that much time for one kid? I don't think it would be a good fit for multilevel teaching. It really confines you to one grade level. I do as much with all four of mine at the same time as I can.
After one year of Covenant I switched to Sonlight and that is my favorite curriculum. I found I really prefer a literature based curriculum and Covenant didn't meet that need.
Wife to Brad
Mom to Taylor, William, Leah and Julia
"I seek an inheritance incorruptible, undefiled, and that fadeth not away; and it is laid up in heaven, and safe there, to be bestowed, at the time appointed, on them that diligently seek it." John Bunyan "The Pilgrim's Progress"