Nevada Democrats unveiled education priorities for the upcoming legislative session Wednesday, calling for early development programs for at-risk students and expansion of all-day kindergarten.The “Building or a Better Nevada” plan also calls for reduced class sizes, an end to “social promotion” of students and a revamping of Nevada’s K-12 public education funding formula, Senate Majority Leader Mo Denis and incoming Assembly Speaker Marilyn Kirkpatrick announced at a news conference in Las Vegas.While the lawmakers couldn’t estimate what it would cost to implement the plan, Denis, D-Las Vegas, said the policies “will have a lasting impact on our education system.”“We’re looking …