This comparative case study analyzed two styles of coaching, team and individual, and the perceived impact each style has on instructional practices. This study was conducted in two elementary schools that are part of the same charter organization in California. The study identified the challenges and benefits of each style through interviews with the teachers, observations of the coaching sessions, and follow-up questionnaires. Some of the benefits reported were time for collaboration, feedback on instructional practices, and opportunities for self-reflection. Some of the challenges were that relationships and personalities of people who were not working well together made collaboration more difficult and less effective. Overall, the data showed that there were more benefits than challenges in both styles of coaching and this was triangulated between all three forms of data collection. When rating the impact of coaching on instructional practices, participants reported a direct link between coaching and their instructional practices. Individual coaching earned an average rating of 3.5 out of 5 and team coaching averaged a 4.8 out of 5 rating when participants were asked how coaching impacted their instructional practices. As stated so well by one participant, which was echoed by all, "Coaching is necessary to improve your practice. Because when it doesn't happen nothing changes in your classroom." [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]