Now, he takes another important step on Saturday -- his first road trip, at Syracuse in the Carrier Dome.
"So far, so good. Now the next test is away from home," FSU coach Bobby Bowden said of his redshirt sophomore quarterback.
Sexton's passing efficiency rating of 133.3 is third in the Atlantic Coast Conference. He is 43-of-66 for 402 yards since taking over for the injured Chris Rix.
He has four touchdowns and one interception.
Sexton goes on the road for the first time, although he will be facing another suspect defense. The Orange are allowing 402.4 yards per game, 82nd in the nation.
Syracuse beat Rutgers last Saturday, rallying for 21 points in the fourth quarter.
Tailback Walter Reyes sparked the victory with 237 rushing yards on 19 carries.
He scored two touchdowns, including the game-winner with 2:24 to play. It was the 10th best rushing performance in BIG EAST history.
Reyes moved into second place on SU's career rushing yardage list (3,150) passing Larry Csonka. He also moved into second place on the league's career touchdown list with 43, passing West Virginia's Avon Cobourne (42).
Running back Damien Rhodes added to the rushing attack by picking up 102 yards on 10 carries. He also scored twice. Sophomore quarterback Perry Patterson completed 11-of-25 passes for 131 yards. He had two interceptions.
Sexton, meanwhile, continues to impress. He has made good decisions, even cracking jokes in the huddle.
"That's good, it keeps them loose,'' Bowden said.
"But tell him to keep it to one-liners. We don't have time for the whole thing.''
FSU tailback Lorenzo Booker said the offense has an "identity'' under Sexton that it did not have under Rix. Fellow tailback Leon Washington called Sexton "groovy." The closest Bowden came to endorsing Sexton: "The thing I see is more consistency.''
Sexton is just having a good time.
"Our team is a family. We look forward to coming together and spending the day together because we have a fun time," Sexton said.
Concerning his first homes start, Sexton, son of FSU running backs coach Billy Sexton, said it reminded of his early days as a youth hanging around the program and watching games in Doak Campbell Stadium.
"I had the same type of emotion that I had as a fan," Sexton said.
"I loved Florida State football. So nothing has really changed when it comes to how much I care about winning the game.
"And, us playing North Carolina (last Saturday), it's not one of our bigger games, so I just looked at that game as a game that we should dominate. I went out there with that mentality."
Sexton says his approach won't change in preparation for the Orange.
"It's indoors on turf, so the speed (of game) is going to be different," Sexton said.
"I feel like if I can get adjusted to it I will be fine."