"In a nutshell, Matt's doing fine," said Schwartz, speaking as the guest at a Michigan AP Sports Editors meeting.
"Whether he didn't have surgery or he did, we were still on the same timetable. ... I don't want to say he's on track because in the offseason, there's no real track, it's more just getting back."
The Detroit Free Press reported that Schwartz said quarterbacks historically recover well from the type of shoulder injury suffered by Stafford, who made only three starts last season -- two of which he didn't finish.
"There is a big difference between an AC (acromioclavicular joint) separation and a torn rotator cuff or a torn labrum or anything that would affect somebody's throwing motion," Schwartz said.
Schwartz did take some time to explain why he doesn't like to speak definitively about injuries. He recalled one season when he was on Jeff Fisher's staff with the Tennessee Titans, and Jevon Kearse was hurt. Schwartz said Fisher was forthcoming about Kearse's injury, saying he'd be out four to six weeks.
But Kearse didn't heal as quickly as expected and came under criticism as a result.
"Jevon was trying his very best to come back," Schwartz said. "Jeff learned, and at that point, when he talked about it, he said, 'I'm never, ever going to put a timetable on somebody's return, because I screwed the kid.'"
Schwartz avoided discussing too many controversial topics, such as the collective bargaining negotiations, but he did spend some time looking back at an encouraging finish to the season.
After losing 24 of his first 28 games as Detroit's coach, Schwartz's Lions won four straight games to finish last season.
In those four short weeks, Detroit began repairing the perception of a franchise that went winless in 2008, the year before Schwartz was brought in. Now the Lions have young standouts Calvin Johnson and Ndamukong Suh, players that will try to lead this team back to respectability after an atrocious decade.
"We were the only team in the history of the National Football League to go 0-16. To be at the point now where we were competitive in every game ... We need to stay on that track. We don't need to change course," Schwartz said. "My perception, sort of going back, looking at the Lions from the outside in, was the Lions would always change courses and overreact."
"We were 10 points down with four minutes to go at Miami and beat them by seven. That's like a magic trick. That's tough to do," Schwartz said. "If you looked at us over the course of the season, I don't know if there were very many times the same thing got us more than once. We learned from some situations, and we hadn't been in a lot of those situations before."
This could be a quiet offseason for the Lions even if there's no lockout -- they're finally at a point where they don't necessarily need to overhaul the roster.
"You need to be able to distinguish between when you're close and you're making progress and you're doing the right things, and when you're all screwed up," Schwartz said. "I tended to look at 2-10 as -- we were really close and we were making progress."
The Associated Press contributed to this report.