Despite pipeline installation under Coldwater Canyon in front of campus, the main South Entrance will open for the 2012-2013 school year.

However, Los Angeles Department of Water and Power flagmen will continue to restrict Coldwater to one lane of traffic between 9 and 3 p.m.

In an email to parents, Director of Communications Jill Shaw provided guidelines for anyone making a commute to the Upper School.

She recommended carpooling and early arrival as means of avoiding traffic.

She also outlined drop-off and pick-up procedures to evade on-campus traffic, confusion and potential accidents.

People traveling north must either drop off at the North Entrance or drive into the Main Entrance and loop around Hamilton Gym.

Those commuting south must either drop off at the North Entrance or enter via Hacienda Drive and drive around Hamilton.

The main entrance to the school is restricted to one lane of traffic, so motorists may only exit via the South Entrance if they are turning right towards Ventura Boulevard.

Southbound commuters must loop around Hamilton and exit via Hacienda to make a left turn.

Students without parking spaces are prohibited from driving to school, as they may not park on Halkirk Drive, the neighborhoods adjacent to campus or other students’ spots.

“All students who are assigned to park on the Upper School campus will be required to display their parking permits or risk being denied parking privileges on school property,” Shaw said.

Traffic through the South Entrance will continue to be limited by LADWP construction for roughly another year, De Matte said.

After that, they will move further south, blocking entry to Hamilton Gym and to the St. Michael’s lot via Hacienda.