|Abu Dhabi 2021 FINA World Championships (25m)||1||—||—||2|
|Tokyo 2020 Olympic Games||—||—||—||—|
|Lima 2019 Pan American Games||—||—||1||1|
- At the Tokyo 2020 Olympic Games, Andison finished 18th in the 200-m individual medley.
- At the Lima 2019 Pan American Games, Andison earned bronze in the 200-m individual medley.
- At the 2021 FINA World Championships (25m) in Abu Dhabi, Andison swam in the preliminaries for the women’s 4×100-m freestyle that went on to win gold. Individually, Andison finished fifth in the 200-m individual medley, eighth in the 100-m individual medley.
- At the Tokyo 2020 Olympic Trials, Andison captured bronze in the 200-m & the 400-m individual medley (personal best time). Her Olympic A qualifying time in the 200 earned her a ticket to her first Olympic Games.
- Andison was awarded the 2020 Brooke and Brittany Henderson Award for Youth for exhibiting small town values and community pride through perseverance, commitment and dedication to attain her goals.
- At the 2019 Canadian Swimming Trials, Andison finished third in the 200-m individual medley in a personal best time to qualify for the 2019 Pan American Games.
- At the 2018 Canadian Swimming Trials, Andison finished sixth and eighth in the 400-m and 200-m individual medley.
- At the 2017 FISU Summer Universiade in Taipei, Andison finished 10th in the 200-m individual medley and 15th in the 200-m breaststroke.
- 2020 ISL team: DC Trident
- 2019 ISL team: LA Current
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