Join our band program 

band students practice the snare drums

Find all you need to know about picking an instrument and more on our Preparing for Fall 2020 - Band page. 

We look forward to having your student in our music programs for the 2020-21 school year.

Shark Band Notes


CHARMS Available! Parents register your child

Band Parents please register with CHARMS. It is a powerful new tool that will help us better communicate with you. We would like all parents to update their contact information through the CHARMS website so that the directors can target e-mails to specific groups of band kids, and help manage our volunteer efforts. Please go to the CHARMS website, and then type SELLERSMSBAND as the school code. The password is your child’s ID number. From the main screen, select “Update Info” and enter your information.


Need to know when the next concert is? Don't want to miss the next band rehearsal?. Remind 101 is for you! Signing on with this service allows parents to receive band updates via text messages and it is FREE! To set up your account visit the Remind website.

Just text the corresponding code below for your child's class to (832) 589-1053

  • All Students @mrknagg
  • Beginner Band @knagg-beg
  • Concert Band @knagg-con
  • Symphonic Band @knagg-sym
  • Honors Band @knagg-hon

About the program

Under the direction of Mr. Knagg, the Sellers University Shark Band program involves students that share an interest in instrumental music, creativity, and performing as a team. Students are encouraged to start band in the sixth grade as it takes time to gain proficiency on an instrument. Beginner Band is open to students in sixth and seventh grade and meets in classes of like instrument families. The beginner band classes combine for 2-3 annual concerts, and also perform each year at the Sandy Lake Fun Fest.

Upon completing one year of beginning band students will audition for one our three upper bands:

  • Concert Band
  • Symphonic Band
  • Honors Band

Each band has a corresponding level of rigor for each student. The upper bands meet as a full group each day and perform concert band literature, pop music, and use enrichment methods to prepare them for various contests and concerts throughout the year. In addition students are challenged to participate in instrument ensembles, all-district band competition, and perform solos on their instrument.

Our hope is that band students will grow as musicians and continue on in high school

About the director

John Knagg grew up in Garland, Texas and has been teaching band since 2001 in both Garland ISD & Richardson ISD. He has been band director at Sellers since 2009. Mr. Knagg received his start in music in 1988 at Lyles Middle School. He is a graduate of South Garland High School and Texas A&M University - Commerce, and he holds a Bachelors of Science degree in Music Education. Mr. Knagg's educational belief is that, "there's a place for everyone in band!"

Mr. Knagg's professional memberships include TMEA, TBA, Kappa Kappa Psi - National Honorary Band Fraternity, and the North American Saxophone Alliance.

In addition to teaching, Mr. Knagg performs with various instrumental groups in DFW area, and also works as a freelance musician.

Charms & Shark Band

Looking for the most recent updates about your child's band? Needing to know dates of concerts and other events? "CHARMS" is a great system that has been useful in monitoring our program over the years! Families can pertinent information on required participation fees, uniform checkout and use, permission forms, calendar of events, etc. We also choose to use this system as a way to maintain communication with parents and students and give parents a way to volunteer with the Shark Band.

How to access parent information

  • Log on to the Charms Website
  • Locate the "PARENT/STUDENT LOGIN" section of the web page.
  • Login to your child's program account using the following login:
    Username: SELLERSMSBAND (case sensitive)
  • If you forget your password and need to have it reset, please contact Mr. Knagg and he will be glad to assist.

The main parent page will allow each family to view their child's band calendar, event list, handouts, and other files. Upon entering your child's CHARMS ID NUMBER, _________(GISD Student I.D. #) another more-detailed screen will appear with additional options to view your student's uniform assignments, music assignments, financial records, forms and inventory. Enter your child's ID FIRST - then if you wish, you may create your own unique password by clicking on the "keys icon"

Clicking on an event on the calendar brings up the details for that event, such as times, attendance requirements and equipment/uniform necessities. Clicking on "event list" puts all of the calendar information in a list form for easy printing.

Need more information?

Sellers Band

  • Do you have questions about the Shark Band?
  • Do you want to join the Band?

Please contact Mr. Knagg at (972) 494-8337 ext. 51416

GISD Fine Arts