Any one who has been involved in any type of construction project is aware of the high likelihood of delays. This has proved true for the playground. It started with San Jose water miss marking the underground water pipes and the construction crew finding one. Now we are dealing with overhead wires. This all leads to the reality that the project will most likely not be done before the end of the school year, but it will be completed. 
" ² My brethren, count it all joy when you fall into various trials, ³ knowing that the testing of your faith produces ^[a]patience. ⁴ But let patience have its perfect work, that you may be ^[b]perfect and complete, lacking nothing." James 1:2-4
I would ask for prayer that God grants us favor with PG & E, that they will come deal with this sooner, rather  that later.