Lee, a senior at Mira Costa High School, earned her fifth consecutive appearance as a Rolex Junior All-American, and her fourth as a member of the first team. The 2014 Rolex Junior Player of the Year finished in the top-five in each of her five appearances in national events, including a T3 finish at the Rolex Tournament of Champions. Outside of AJGA play, Lee made appearances in two LPGA events in 2015, the Swinging Skirts LPGA Classic (where she made the cut with rounds of 70-74-74-76–294) and the ANA Inspiration. The Stanford verbal commit also represented the winning U.S. team in the PING Junior Solheim Cup. Lee is currently No. 6 in the Polo Golf Rankings.
| Rank | Event | R1 | R2 | R3 | R4 | Total |
| T2 | 2015 The PING Invitational | 71 | 73 | 78 | 222 | |
| T5 | 2015 U.S. Girls' Junior Championship | 67 | 70 | 137 | ||
| T3 | 2015 Yani Tseng Invitational presented by the Swinging Skirts | 69 | 71 | 72 | 212 | |
| T3 | 2015 Rolex Tournament of Champions | 70 | 73 | 71 | 69 | 283 |
| T4 | 2015 Thunderbird International Junior | 72 | 71 | 71 | 214 | |
| T17 | 2014 Polo Golf Junior Classic | 75 | 73 | 148 |