Recently released March roll statistics show the number of pupils at the college has increased from 906 in 2004, when it was amalgamated with Mosgiel Intermediate, to 1138 this year.
Principal David Hunter said he was delighted rolls on the Taieri were bouncing back with a vengeance.
However, the college was now nearing capacity and as a result of its continuing roll growth, an enrolment zone had been established, he said.
"Our enrolments are looking very, very strong for next year as well.
"If you're out of zone, it's proving pretty difficult to get in here now. We're pretty much at capacity."
If the roll continued to grow at the present rate, the school would need to begin discussions with the Ministry of Education to build more classrooms in the next few years, he said.
"Mosgiel is still growing pretty rapidly."
While primary schools in the area were growing steadily, much of the roll growth at Taieri College was because pupils were choosing to stay in Mosgiel rather than go to Dunedin for their secondary education, he said.
"Mosgiel's growing - as is our reputation.
"We just concentrate on what's in front of us, and providing the best we can for kids who want to be here.
"That appears to be suiting a lot of people.
"We've also been very fortunate to have had a huge capital upgrade at the school - our facilities are fantastic.
"I think people are balancing everything up when they're choosing schools for their kids."
Taieri school rolls are mirroring Dunedin's rolls, which have increased by more than 400 pupils in the past year, and Otago-wide rolls which have increased by 938 pupils over the past year.
Southland-wide, the rolls have increased by 489 pupils, and Invercargill school rolls are on the verge of breaking the 10,000 mark.
Overall, South Otago rolls continue to decline, albeit very slowly, and West, North and East Otago rolls remain relatively stable.
