It's no easy task to get — and maintain — the attention of a gaggle of children, tweens or teens in the classroom, especially today with smartphones and social media vying for mindshare. It can be hard to get these kids to engage, get them to care about the Pythagorean theorem or Genghis Khan's conquests, especially in a public school system with dwindling budgets. Sure, the curriculum guides lesson plans, but teaching straight out of a book isn't the way to excite and educate young people. Great teachers are mission-driven. They care about each student. They go above and beyond. They love their jobs. And they really need to be appreciated.

It's not an easy career path, but a dedicated and passionate teacher can have an immense impact on the impressionable students in the class. Below, we hear from people in the digital space whose great teachers taught important lessons they've carried with them to adulthood — and success. Did a teacher have a huge impact on you? Share your story and thank them here.

Adam Braun, founder, Pencils of Promise and author of The Promise of a Pencil:

In high school my Spanish teacher, Señorita Sbrizzi, believed in us so hard. She made the class so fun and inspiring that learning a new language became enjoyable, and eventually when I started traveling through Latin America in my 20's it was those same Spanish language skills that opened my eyes to new people and places. Without her, there would be no Pencils Of Promise. She's truly one of the people I admire most.

Max Ventilla, CEO, AltSchool:

I’m lucky to have had many great teachers, but Kelly Wise, my senior seminar Novel & Drama teacher of Andover stands out above the rest. I remember the enormous personal commitment that was implied just by applying to his class. Everyone knew he required an insane amount of work — reading piles of books and plays and watching several movies each week; writing, trashing and rewriting papers several times in a row. He had impossibly high standards, but the payoff was well worth it. He pushed all of us so far beyond what any of us thought we were capable of achieving. However, it was the sense of community he built at the same time that stands out the most for me — I'll never forget my fellow students in that class. Every student deserves a Kelly Wise experience.

Image: Kelly Wise

Trip Cowin, VP of Business Development, Basno:

Three days into my tenure as a first grader at Farmingville Elementary School, my parent's received a surprising phone call: "Trip can't read." My mother's response, and my teacher's reaction to it, were both direct: "We know, isn't it your job to teach him?"

Months of hard work later, my teacher, Mrs. Dervin, tasked me with the harrowing role of acknowledging a live audience at the conclusion of our class' rendition of Tikki Tikki Tembo. I was to read from a notecard that Mrs. Dervin had prepared for me, but there was a catch — I wouldn't be allowed to see the contents of the notecard until that very moment. Successfully navigating through my lines in front a live audience was a thrill I'll never forget. It instilled in me a confidence in my abilities, and a love for reading, that I fostered throughout my academic career. Mrs. Dervin, deservingly so, was acknowledged in my Senior English Thesis at Princeton, which, if you look on a map, is a long ways away from Tikki Tikke Tembo.

Elliot Tomaeno, Founder, Astrsk PR:

Like many a high school student I was pretty awkward in my sophomore year of high school. I found myself in an AP english class taught by Laura Fore just about at the same time I decided that 'being smart' and 'reading old books' were not things that 'cool kids' did. For my first month in that class I was probably a monster. I didn't read anything, was disruptive during class and was probably super disrespectful to Ms. Fore but for some reason she kept being super kind and patient with me. One day, about a month into class she pulled me aside and said, "I know you don't think Lord Byron is going to help you here, right now. I know you might find Chaucer irrelevant to your experience here in high school. I know Wuthering Heights can be boring compared to the gossip going around the halls but these authors writings have endured for hundreds of years — the rumor on the bathroom stall will be painted over by next week, a weak memory by the time you graduate and completely forgotten by the time you enter the workforce. You have finite capacity in that brain of yours — use it to store and process things of meaning and you live a meaningful life."

She knew I needed to hear that — I was torn between who I was and who I felt like my peers expected me to be. Her words hit me hard, and I started reading again and it was through her class that I discovered my love for writing (which probably led me to a career in PR) — but something in her words struck a deeper chord with me — and her approach to a 'meaningful life' has stuck with me. She taught me that we have to make choices about what we use our cognitive energy for and that those choices determine the direction of our lives — this is something that I doubt will ever fade from my memory (unlike the messages on the bathroom stalls — which she was totally right about).

Debbie Sterling, Founder, GoldieBlox:

Like most high school students entering college, I didn't know what I wanted to study. When my math teacher mentioned I might like engineering, I looked at her like she was crazy. An engineer, I thought, was certainly some nerdy guy calculating algorithms in front of computer screens all day. Being an engineer certainly wasn't a path for a creative girl like myself! Nevertheless, her advice stuck with me, and I enrolled in Mechanical Engineering 101 during my first semester at Stanford University. In less than one class, I soon realized my high school math teacher was right along. Engineering — it turns out — is an amazing outlet for creativity and innovation. Without my teacher's encouragement, there's a good chance I wouldn't have discovered the wonderful world of STEM and all it has to offer.

Image: Debbie Sterling

Cyrus Massoumi, Founder and CEO, ZocDoc:

I was never a good student until I met Mr. Greco. Up until the seventh grade, it was always tough for me to stay motivated but he inspired me to study hard, stay focused and be determined not to fail. My desire to make him proud was what drove me to my success in his class, and beyond it. When people ask me what I attribute my success to today I say it's three things: hard work, focus, and a love of what I do. What I don't always mention and I'm glad I am able to share now, is that I learned those integral lessons early on, from my seventh grade teacher Mr. Greco.

Ryan Hayward, Co-Founder, Hatch:

Mr. Laitenberger was the first teacher I had who directly challenged me to be better, not just as a student, but as a person. As my eighth grade social studies teacher, he had a ruthless homework lateness policy that resulted in the lowest score I ever received on a report card; a 78! He was also the school track coach and at 12 years old I was not the most physically active, so he challenged me to join the cross country team and “lose my baby fat.” Yes, he actually said that!

I learned from Mr. L. that ability and vision is necessary in the equation, but it is ultimately execution that matters. You can be perfectly capable of doing something and may have demonstrated past performance, but if you don't seize the initiative and continue to work at it, you'll just be mediocre, or worse, never take that next big risk. This lesson has stayed with me throughout adulthood and into my career, through my five years at Google, until most recently when I made a life-changing move to start a company.