What is CST?

Certified Survey Technician (CST) is four-level certification program for surveying and mapping technicians. The program uses “work elements” to define the testing parameters.

SLSI supports and promotes this program by reimbursing students 50% of their application cost upon successful completion of their first exam; whichever level exam that might be. For reimbursement send or email a copy of the application form and a copy of your certificate to the SLSI state office.

Society of Land Surveyors of Iowa
1080 Jordan Creek Parkway, Suite 106C
West Des Moines, IA 50266
Email: [email protected]
Phone: 515-284-7055

For more information on the CST Program, click on link below to be directed to the NSPS site.  Find the Certified Survey Technician link under the Programs tab at the top of the page to access the menu of items such as information on exams, applications and fees, program books, etc. 

More Information 



What is TRIG-STAR?

Trig-Star is an annual high school mathematics competition based on the practical application of Trigonometry. Students that participate are not only provided with an opportunity to earn awards, but also leave with a better understanding of the technical profession of Geomatics, which includes Land Surveying and Mapping.

Professional Land Surveyors use the Trig-Star program to advance communication with the communities they serve. Local Land Surveying, and Civil Engineering companies and governmental organizations provide professionals who volunteer their time to explain how trigonometry is used to solve Land Surveying and Mapping problems.

The Purpose of the Trig-Star Program is:

  • To promote excellence in the mastery of mathematics in high school. 
  • To honor high school students who demonstrated their superior skill among classmates at the local, state, and national levels. 
  • To acquaint the high school students with the use and practical applications of mathematics in the Geomatics professions. 
  • To build awareness of Geomatics as a profession among mathematically skilled high school students, career guidance counselors, and high school math teachers.

The contest can be held anytime during the school year; however, it is necessary to contact your state coordinator to insure you schedule the test in a time frame that allows your winner to be eligible to compete for State or National prizes.


There may be a presentation by a Land Surveyor to help participants understand the Geomatics profession. The test is a timed exercise of one hour, during which students must solve trigonometric problems that incorporate the use of right triangle formulas, the law of sines, and the law of cosines. Winners are determined by the most correct answers in the fastest time.

TESTING LEVELS AND PRIZES (The State of Iowa currently has 2 LEVELS)

The first level is given at the local high schools. There is one winner at each high school. Currently SLSI awards the first place winner with $250; the second place winner with $150 and the third place winner with $75. Additional prizes solicited by sponsors may be awarded.

The second level is the national test. The state winner from each of the participating states will compete for the National Trig-Star title. The awards given at this level by the National Society of Professional Surveyors area as follows:

1st prize - $2000 Student Award and a $1000 Teacher Excellence Award for the math teacher. 
2nd prize - $1000 Student Award and a $500 Teacher Excellence Award for the math teacher.
3rd prize - $500 Student Award and a $250 Teacher Excellence Award for the math teacher.

The National Society of Professional Surveyors sponsors the awards at this level.   https://trig-star.com/

For more information and/or materials contact the SLSI state office:
1080 Jordan Creek Parkway, Suite 106C
West Des Moines, IA  50266
Phone: 515-284-7055
Fax: 515-284-7301 
Email: [email protected]