By Diane NadlerrnrnThe groundbreaking ceremony for the construction of the new Clarke County high school is set for July 24, and site work begins July 26. Many people are still holding their breath. Those who have endured a decade of trial and error leading up to the construction hesitate to believe the school will be built without further bureaucratic snags. But if the reputation of the project’s recently announced general contractor, Howard Shockey and Sons, is any hint – they can rest assured it will meet its 18-month deadline at the seemingly bargain-bid price of $23.3 million.rnrnThe 114-year-old company, located at 1057 Martinsburg Pike, is known for building schools on time and within budget. The company has worked on nearly every public school in the area over the past 50 years. That includes the construction of 11 schools for Frederick County – the newest of which is Greenwood Mill Elementary School. The company also built Frederick Douglass Elementary School for Winchester Schools, and did renovation work on three of the district’s other facilities – including the $72 million renovation of Handley High School.rnrn”They’re definitely the heavyweight around here