2012-13: Member of Northwestern's sprint freestyle group and a top 100 breaststroker for the Wildcats ... Ranked first on NU's top times list for the year in the 100 breast while coming in second on the list in the 50 free and fourth in the 100 free ... Member of four of Northwestern's top relays, swimming with the fastest 200 free, 400 free, 200 medley and 400 medley relays of the year ... Big Ten Distinguished Scholar ... Academic All-Big Ten ... Established an NU school record with the 200 free relay, swimming an NCAA `B' cut time of 1:30.55 at the Big Ten Championships ... Swam a career-best 1:03.06 in the prelims of the 100 breast at the conference meet to move into a fifth-place tie with Jessie Bailis on NU's all-time top times list in the event ... That time qualified her for the bonus final at Big Tens, where she eventually placed 20th with a 1:03.60 ... Also competed in the 50 free (33rd with a career-best 23.26) and 100 free (49th) at the Big Ten Championships ... Three times lowered her career-best time in the 100 breast during the fall ... Made three championship finals and one consolation heat at NU's own six-team TYR Invitational (11/16-11/18) ... Took second overall in the 50 breast, sixth in the 100 breast and eighth in the 100 free ... In the 100 breast, first broke her career-best time in the TYR prelims with a 1:04.95 before making it 1:04.86 in the finals ... Also was 10th overall in the TYR 50 free ... Scored points at the seven-team Iowa Invitational (11/30-12/2) with consolation final swims in the 50 free and 100 breast ... Was 11th in the 50 free after a season-best prelim swim of 23.51 ... Took her 100 breast career-low down to 1:04.40 in the prelims of that event before ending up 16th overall ... Also had a second-swim in the bonus final of the 100 free, taking 20th overall in Iowa ... Scored points with 11 total top-five dual meet finishes in the fall ... Best dual-meet results of the year were a trio of second-place finishes, including in both the 100 breast and 50 free in a dual meet at Iowa (1/26).
2011-12: Ranked third in the 100 breast and the 50 free, and fifth in the 100 free on Northwestern's top times list during the year ... Also competed with NU's top 200 free relay of the season, earning an NCAA `B' provisional qualifying time of 1:30.59 at the Big Ten Championships ... That time ranks fourth on NU's all-time top times list in the event ... CSCAA Scholar All-America honorable mention ... Big Ten Distinguished Scholar ... Academic All-Big Ten ... Competed individually in the 50 free (36th), 100 breast (38th) and 100 free (48th) at the Big Ten Championships, swimming career-best times in the 50 free (23.43) and the 100 free (51.15) ... Swam a then-career-best 23.86 to finish 13th in the 50 free at Northwestern's eight-team TYR Invitational (11/18) ... Qualified for three total consolation finals at the TYR Invite, also taking 10th in the 50 breast and 13th in the 100 breast ... Won the 100 breast during NU's winter training trip dual against Colorado College and Austin College (12/17) ... Had three total top-three dual meet finishes on the year ... Set career-bests in all of her events against Iowa and Harvard (1/21) with a 1:05.53 in the 100 breast, a 23.68 in the 50 free and a 52.30 in the 100 free ... Later broke her two freestyle marks at the Big Ten meet.
2010-11: Member of Northwestern's freestyle and breaststroke groups ... Ranked fourth in the 100 breast on NU's top times list for the year ... Academic All-Big Ten ... Swam career-best times in all three of her events at the Big Ten Championships ... Competed in the 100 breast (36th), 50 free (55th) and 100 free (59th) at the conference meet ... Qualified for the championship final of the 100 free at NU's own six-team TYR Invitational (11/19-11/21), coming in eighth ... Made consolation final appearances in the 50 breast and 100 breast at the TYR, placing 10th and 15th, respectively ... Also earned a bonus final swim in the 50 fly, finishing 22nd overall ... Best dual-meet finish of the regular season was a fourth-place effort in the 50 free at NU's quad dual (11/6) ... Also scored a dual-meet point with a fifth-place finish in the 100 breast at Iowa (01/22).
2009-10: Won the consolation final of the 50 breast at Northwestern's six-team TYR Invitational (11/20) ... Also made the consolation finals in the 50 back and 100 breast while qualifying for the bonus heat of the 100 free at the TYR Invite ... Best dual meet finishes of the year were a pair of fourth-place efforts in the 100 free against UIC (11/14) and Iowa (1/23).
High School: Earned all-conference and all-America honors in all four of her high school seasons ... Was all-state as a freshman, junior and senior ... As a senior, named Zone 5 Swimmer of the Year and first-team all-area ... All-America in the 100 free, 200 free, 200 free relay and 200 medley relay as a senior ... Holds team and pool records in the 200 free ... Won state championships with the 200 free relay in 2005 and the 200 medley relay in 2007 ... Team finished fourth or better in the state in all four of her prep seasons ... Swam club with the RAYS from 2000-09 ... Finished third at the YMCA National Championships in the 200 free relay in 2008 ... Took 15th at the YMCA Long Course National Championships in the 50 breast in 2008 ... National Honor Society member ... Earned High Academic Achievement award and honor roll status from 2006-09.
Personal: Born Katherine Rae McCullough ... Daughter of Neil and Jill McCullough ... Neil McCullough is a 1986 graduate of Northwestern ... Chose Northwestern over Michigan and Washington University in St. Louis ... Majoring in Statistics with a minor in Business Institutions.
McCULLOUGH'S CAREER BESTS
| Event | Career Best |
| 50 freestyle | 23.26 |
| 100 freestyle | 51.15 |
| 200 freestyle | 1:56.20 |
| 500 freestyle | 5:14.20 |
| 100 breast | 1:03.06 |