Construction of new schools when the old can be renovated serves only to create a new building which has neither substance nor soul. It resembles a wasteful consumer who throws away a perfectly good coat because it is out of style. It destroys the soul of a smaller community and creates a building without moorings in at least one of the communities it should serve.
If technological advancement can be secured by keeping what is tried and true- it is far better to do such a thing than jump into educational fads. Does anyone remember the open classroom? Having personal experience with large educational settings and having family members and spouses teaching in large consolidated high schools- I cannot equate bigger with better. Any entity- educational or otherwise- which aspires to bigness should be instinctively distrusted.