The students you see in this post represent Moldova’s brightest hopes for the future.

They are optimistic in a country where many people are pessimistic. They want to start businesses and help others. They are overflowing with great ideas, and they are brave enough to present them on a stage in front of a group of judges — in English.

They are the finalists in this year’s Diamond Challenge Moldova, a competition for high school students interested in becoming entrepreneurs. On Jan. 28, seven student teams will vie to be named the best “social venture,” and six others will compete for the best business idea. Both winning teams will receive $1,000 and a chance to compete in April at the international Diamond Challenge for High School Entrepreneurs competition in Delaware.

On Sunday, I led a workshop to help the teams sharpen their public speaking skills and pitches. Joining me were several other Peace Corps volunteers who have been mentoring teams, helping to select the finalists and organizing the competition as a whole. I have been mentoring one of the teams myself and will be cheering for them in the finals.

Nearly 2,000 students from around the world have participated in Diamond Challenge since it launched in 2012. Moldovan students have done very well in the competition, with two teams making it to the finals last year. Do It For Bunica won the $10,000 grand prize in the social venture competition with its project to connect expatriate Moldovan workers with teenagers back home who can help care for their aging parents.

Another Moldovan team won the social impact prize a year earlier with its idea of producing clothing with reflective thread that can be seen by seen at night by cars driving along dangerous country roads.

Both of those earlier teams gave excellent pitches, which I showed on Sunday, helping the current students learn the best ways of persuading judges, investors or others. My other sources ranged from the television show “Shark Tank” to President Obama to Guy Kawasaki, the renown Silicon Valley entrepreneur. The students will be making their own final pitches before a new group of Moldovan and American judges at the Dreamups Innovation Campus, the local entrepreneurship center about which I’ve written previously.

Peronally, if someone had asked me when I was in high school to speak publicly in a foreign language, I would have been terrified. That’s why I also showed this hilarious video with Steve Martin, to help the students relax. I’ll post again after the finals to tell you how their presentations turned out. Based on what I saw at the workshop, I expect them to be terrific.