Caroline Green was born on October 3, 2003, in Washington, D.C.[1] Her mother, Mary, is a forensic scientist and her father, Richard, is a periodontist.

[5] She subsequently commented that having been off the ice for two months and having to readjust to skating was a significant challenge, as neither sibling had had to deal with a major injury before.

Returning to competition, they won junior gold medals at the 2018 Golden Spin of Zagreb in December and at the Toruń Cup in early January.

[6][8] Moving to the senior level, Green/Parsons placed fifth at Lake Placid Ice Dance International and the 2019 CS Lombardia Trophy.

Green remarked that the transition to the senior level had "definitely been mainly adapting to longer programs and more demanding elements.

[10] They won their first international medal, a bronze, at the 2019 CS Warsaw Cup behind Lauriault/Le Gac of France and Russia's Konkina/Drozd.

[13] In order to limit international travel, the ISU assigned the Grand Prix based on geographic location, and Green/Parsons attended the 2020 Skate America.

"[17] Green/Parsons made their Olympic season debut at the 2021 CS Autumn Classic International, winning the bronze medal.

[19] They were initially assigned to the 2021 Cup of China as their second Grand Prix, but following its cancellation, they were reassigned to the 2021 Gran Premio d'Italia.

[22] They were named first alternates for the Olympic team and were sent to compete at the 2022 Four Continents Championships in Tallinn, where they won the gold medal.

[29] Green/Parsons entered the 2023 Four Continents Championships as contenders for the bronze medal, but after Parsons fell in the rhythm dance they placed fifth in that segment, 9.05 points back of Lajoie/Lagha in third.

[33] Following advice from judges there, they opted to discard their original Paula Abdul rhythm dance, switching to a medley of music from Scorpions.

"[34] At their second Grand Prix, the 2023 Cup of China, they placed third in the rhythm dance despite Green losing a twizzle level.

"[39] Green and Parsons began the season by winning silver at the 2024 Trophée Métropole Nice Côte d'Azur.

Going on to compete on the 2024–25 Grand Prix series, they finished fourth at the 2024 NHK Trophy and sixth at the 2024 Cup of China.