The Briton will reprise her role behind the wheel of the team’s #28 entry, following a rookie campaign in 2023 that featured five top-10 finishes, including a season-best of sixth at Portland.
Chadwick, who finished 12th in the standings, becomes the fourth driver announced for Andretti Global’s Indy NXT programme in 2024 with fellow team returnees James Roe and Louis Foster joined by rookie Bryce Aron.
Each will be running at the 20 Chris Griffis Memorial Test on 20 October at the Indianapolis Motor Speedway road course.
“I’m really looking forward to being back with Andretti to compete in my second Indy NXT season,” said the 25-year-old Williams Racing Driver Academy member.
“My first year with the team taught me so much and we were able to make a lot of progress with every race.
“I know that taking this experience and confidence into 2024 is going to be massively valuable for us, and I truly feel like part of the family here.
“I can’t wait to hit the ground running this winter and see what we can do for next season.”
Source: Autosport